Iodine → Benzylbenzene diisocyanate

Participants

Reaction Steps

The above amounts of diethanolamine and iodine were added to the above amount of soybean oil with stirring. The mixture was stirred for 22 hours at a temperature between about 180° F. and about 228° F. Then, the above amounts of maleic anhydride, toluene and p-toluenesulphonic acid were added with stirring. The mixture was refluxed for 10 hours using a Dean-Stark distilling trap, then distilled out of solvent to give a liquid soybean oil based polyol with a hydroxyl number of 54. A reaction mixture of about 10.00 grams of the polyol and the above indicated amount of diphenylmethane diisocyanate yielded a solid soybean oil based polyurethane material.

Provenance & Evidence